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P‐58: Wide‐Range Dimming Control of LED Backlight for Avionic Displays
Author(s) -
Chung SeKyo,
Lim SuHyun,
Lim JeongGyu,
Shin HwiBeom,
Shin MinJae,
Sohn SeungGurl
Publication year - 2008
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.3069408
Subject(s) - backlight , avionics , range (aeronautics) , computer science , controller (irrigation) , brightness , computer hardware , engineering , electronic engineering , liquid crystal display , optics , aerospace engineering , physics , agronomy , biology , operating system
This paper deals with a wide‐range dimming control of a LED backlight for avionic AMLCDs. The design and implementation of a digital dimming controller using a current‐controlled buck converter and light sensor feedback are presented. The proposed system provides a brightness control capability in a wide dimming range of from 200fL to 0.05fL (4,000:1), which is suitable for avionic displays. The experimental results are provided to verify the control performance.